Masonite Flush Series - Birch Veneer 80″

The Masonite Flush Series Birch Veneer 80” offers 11 width options from 17-1/4” to 36” with both hollow and solid core configurations — the kind of size flexibility that means fewer callbacks for doors that don’t quite fit. Universal handing allows for flexible installation (left or right swing), and the doors can be trimmed up to 1/4 inch on the bottom rail and each side for custom fitting. That’s worth something when you’re dealing with wonky door frames in century-old Montana homes.

Core Construction and Performance

Hollow core uses lightweight, eco-friendly construction using by-product wood chips. Solid core provides more substantial, stronger construction with better sound reduction (10/10 privacy level). The weight difference matters — approximately 50 lbs for medium-sized slabs in hollow core configuration. Hollow core is budget-friendly, lightweight, and easy to hang, but offers less sound insulation and feels less substantial. Solid core feels like solid wood, provides superior sound dampening, and more durability, but costs more and weighs more.

The engineered wood construction resists warping, shrinking, and cracking — a real consideration in Montana where indoor humidity can swing from bone-dry in winter to swamp-like during spring thaw. Skip the solid core if you’re just dividing a utility room from a hallway. That 10/10 privacy rating costs money, and nobody needs soundproofing between the water heater and the mudroom.

Specification	Value
Height	80 inches
Available Widths	17-1/4”, 23-1/4”, 24”, 27-1/4”, 28”, 29-1/4”, 30”, 31-1/4”, 32”, 35-1/4”, 36”
Thickness Options	1-3/8 inch (1.375”), 1-3/4 inch (1.75”)
Trim Allowance	Up to 1/4 inch on bottom and sides
Weight	Approximately 50 lbs for medium-sized slabs
Sound Rating (Solid Core)	10/10 privacy level

Finishes and Installation

Six finish options available: Unfinished, Primed, Clear Coat, Enamel Paint, PVC, PPL. The birch wood veneer surface accepts both paint and stain — though birch takes stain unevenly unless you use a pre-conditioner. The primed version saves time on remodels where everything’s getting painted white anyway.

Requires boring for the lockset (standard 2-3/8” or 2-3/4” backset) and mortising for hinges. These come as slabs only — door only, intended for installation into existing frames. Compatible with standard interior door frames and jamb widths ranging from 4 to 10 inches. Works with standard 5/8” radius hinges (usually 3 hinges for 80” height) and standard door knobs/levers.

The 3-Year Manufacturer’s Warranty is voided if the door is trimmed more than 1/4 inch from the designated rails/sides. That’s not much room for error — measure twice before you cut.

Common Applications and Reviews

Suitable for residential interior doors including bedrooms, bathrooms, closets, and hallways. Also works for functional spaces like kitchen pantries, laundry rooms, and home offices. Light commercial applications include office partitions or interior utility doors.

Reviews show 4.3 out of 5 stars at Lowe’s (198 reviews) and 3.4 to 3.6 out of 5 stars at Home Depot (approximately 28-66 reviews per size/model). Customers praise the modern appearance and natural wood grain look, noting good value for money for budget-conscious renovations. Some users noted that as a ‘slab only’ product, it requires careful measurement and hardware preparation.

Frequently Asked Questions

Can these doors be cut to fit smaller openings? Yes, but only up to 1/4 inch on the bottom rail and each side. Cutting more than 1/4 inch voids the 3-year manufacturer’s warranty.

What’s the real difference between hollow and solid core for sound reduction? Solid core provides 10/10 privacy level sound reduction, while hollow core offers less sound insulation. If you need actual privacy between rooms — home office, master bedroom — spend the extra for solid core.

Do these doors come with hinges and hardware? No. These are slab doors only, intended for installation into existing frames. You’ll need to bore for locksets and mortise for hinges yourself.

Which finish option works best for staining? The unfinished model is paintable and stainable. The birch veneer accepts stain, but like all birch, it can blotch without proper preparation. Use a pre-stain conditioner for even results.

How heavy is the solid core version compared to hollow core? The doors weigh approximately 50 lbs for medium-sized slabs in hollow core configuration. Solid core doors are heavier, though exact weight isn’t specified. Plan on solid core being roughly 30-40% heavier based on typical door construction.